Adjustable cage for crushers



Aug. 20, 1929.

r w. P. GRUENDLER ADJUSTABLE CAGE FOR CRUSHERS Filed July 16, 1928 2 Sheets-Sheet Aug. 20, 1929. w. P. GRUENDLER ADJUSTABLE CAGE FOR CRUSHERS Filed July 16, 1928 2 Sheets-Sheet I INVENTOR I ATTORNEY. I

Patented T20, 1929.

UNITED STATES PATENT OFFICE.

WILLIAM P. GRUENDLER, 013 UNIVERSITY CITY, MISSOURI.

ADJUSTABLE CAGE FOR CRUSHER S.

Application filed July 16,

1 crusher so as to varythe clearance between the hammers and the cage openings, and thus vary the fineness of the product therethrough; secondly, to compensate for the wear 'of the hammers; thirdly, to vary the take-up filler device'in the cage corresponding to the adjustment of the cage; and to certain; details of construction hereinafter fully described and claimed.

In the accompanying drawings in which like reference numerals indicate correspond ing parts,

Fig. 1 represents a vertical sectional View of a crusher with my improvements applied thereto;

Fig. 2, a detail view of my takeeup filler device from the inside;

Fig. 3, a side elevation of the crusher shown in Fig. 1;

Fig. 4, a partial radial section on. the line 14 of Fig. 3; v

Fig. 5, a detail view of my drum ratchet; and

Fig. 6, an end view of a cap shaft.

Referring to the drawings, the numeral 1 designates a rotary shaft on which is mount-- ed a series of spaced discs having sets of. holes at different distances from the axis" one set carrying hammer rods 3, on which are pivoted suitable hammers 5, comprising the rotor.

Side housings 6 with pedestals for shaft bearings 7 for the rotor, enclose a hinged breaker plate 8 provided with adjustable tension bars 9 at the sides, while a back spacer 10 and cover 11 complete the casing. Below the breaker plate is mounted a cage comprising grate bars 12 with spacers 13 carried in an arcuate frame of annular side pieces 14 connected by rods and pivoted on a cross shaft 15 mounted in slots 16 in the side housings radially disposed from the shaft axis, and substantially parallel to the adjacent lower end of said breaker plate.

This frame is supported on cam eccentrics 17 near the front cross shaft and back spacer respectively, and these eccentrics are mounted on short cap shafts 18 journaled in the side housings, and preferably in outside 1928. Serial No. 293,160.

webs 19, or otherwise, with nuts threaded on the outer ends, or other fastening means therefor. A drum 20 with radial holes for insertion of a lever rod, is mounted outside the housing on each shaft, and a ratchet disc 21 preferably integral with the drum, is engaged by a pawl 22 pivoted on a cap bolt in the side housing adjacent to the ratchet teeth.

Said shafts 18 are preferably squared for seating the cam eccentrics and drum ratchets,the square portion 23 for the eccentric being larger than the square portion 24 for the drum ratchet, and the outer journal portion 25 being relatively smaller than the adjacent square portion 24 so as to pass through the drum ratchet to its bearing in said outer web 19. In other words, the journals are inscribed with regard to the respective square portion inward on the shaft, as shown in Figs. 6 and 4. l

By rotating the front drum ratchets by lever rods inserted in convenient holes of the drums, the cam eccentrics on the front shafts will raise the front end of the arcuate frame and grate bars and cross shaft 15, radially inward in the latters slotted-hole mounting, and substantially parallel to the lower end ofthe breaker plate. The rear end of the cage is similarly raised by rotating the rear cam eccentrics, and a smaller takeup filler is required above the rear cage bar.

I provide an adjustable filler device consisting of two slidable pieces 27 and 28 shorter than the back spacer and having matching wedge surfaces 29 (Fig. 2). Each piece has end projections through holes in the side housingsone end projection of each piece being threaded and hand wheels 3031 (or other tapped pieces) mounted thereon on opposite sides from each other. By rotating said handwheels the said wedge pieces are slidingly operated in opposite directions, and the matching wedge surfaces cause the combined pieces to vary in circumferential deptlfof the filler according to the amount of adjustment of the cage.

The upper piece 27 backs against the cover portion above and simply slides endwise. The end projections of the lower piece 28 pass through slotted holes. The lower piece slides endwise in the opposite direction and is wedged downward from the closed smaller depth shown in Fig. 2 to the greater depth shown in Fig. 1.

Thus when adjusting the cage, the .filler device is first lessened in depth, and the cage is raised as desired.

Then the filler is adjusted by the hand wheels so as to bear firmly on the upper grate bar, and transmit the circumferential stress of crushing to the cover portion immediately above the filler. Set screws 32 through the back spacer engage the upper ends of the frame pieces to secure firmness.

This arrangement avoids the necessit of -opening the cover to insert a smaller ller piece every time the cage is raised, as would otherwise be required. The drum ratchets and hand wheels being outside the housings, the adjustment of the cage and corresponding change of my filler device may even be done while the rotor is turning.

"plate is also adjusted to correspond, by,

therein, independently operable cams sup porting said cage, shafts for said cams extending outside the casing, drums having lever holes and ratchet teeth mounted on said shafts outside the casing, and pawls engaging said teeth.

2. A crusher comprising a casing, an adjustable cage therein, shafts journaled in the casing and having square portions inside and outside the casing, cams mounted on the square portionsof said shafts inside the casing and supportingsaid cage, drums having lever holes and ratchet teeth mounted on said square portions outside the casing, and pawls" engaging said teeth.

3; A crusher comprisinga casing having outer webs thereon, a cage adjustably mounted therein, shafts having caps on their inner ends and square portions of different size alternating with journals of different size,-

the latter mounted in said casing and webs respectively,c'ams onthe square portions next to the caps and supportmgsaid cage,

drums with lever holes and ratchet teeth mounted on the other square portions, and

pawls engaging said teeth, substantially as described.

4.. A crusher comprising a casing, a cage therein, means to vary adjustably the location of said cage, and an adjustable filler device at the rear of said cage comprising multiple slidable pieces having matching wedge surfaces and threaded end projections outside the casing, and tapped pieces mount ed on said threaded end projections for opposite endwise adjustment of said wedge pieces.

5. A crusher comprising a casing having a cover portion, an adjustable cage, means to adjustably support said cage, :1 filler device mounted above the rear end of said cage and consisting of two endwise slidable pieces having matching wedge surfaces and end projections through the casingthe upper piece backing agalnst the cover portion and slidable endwise and the lower piece also movable up and down with its end projections extending through slotted holes in the casing, and hand wheels mounted on opposite threaded end projections of respective pieces adapted to efiect' opposite endwise movement of both pieces and upward and downward movement of said lower piece.

6. A crusher comprising a rotor, a casing,

an adjustable cage therein having a pivotal,-

radially adjustable engagement at its front end with the casing and freel movable at the rear upper end, multiple a justable supports for said cage adapted to vary the radial position of said cage with regard to said rotor, and screws mounted in the back of said casing engaging the rear upper end of said cage, substantially as described.

In testimony whereof I have aflixed mysignature.

VVILLIAM P. GRUENDLER. 

